Electronic calculator



Aug. 2, 1960 J. J. LENTZ ET AL 2,947,478

ELECTRON I C CALCULATOR Filed May 16. 1955 22 Sheets-Sheet 1 I DIG/T /2 BOX} L-PHAQE I DIGITH BOX) a- PHASE I 0/ G l 7' (I2 cs1. L s

lA/l/ENMRS.

r j .ramv .z LE/VTZ 6, 3, P JOHN H. PALMER DANIEL ROBE/IVS FIG. I

AGENT Aug. 2, 1960 J. J. LENTZ ETAL 2,947,478

ELECTRONIC CALCULATOR Filed May 16, 1955 22 Sheets-Sheet 3 F -III 1960 J. J. LENTZ ET AL 2,947,478

ELECTRONIC CALCULATOR Filed May 16, 1955 22 Sheets-Sheet 5 AAA FIG. /3a

1960 J. J. LENTZ ET AL 2,947,473

ELECTRONIC CALCULATOR Filed May 16, 1955 22 Sheets-Sheet 6 MAGNET/6 DRUM X TIMING TRACK I Y d RC sr/vc. 6A r5 1 w MEMO K WcP n W P AMPL. u BASE 0.90

4 FIG. 4a

IBLANK ass I 4 FIG. 9a

II II II U 'l I! 8 4 3 Z PULSE rams/v FORMER 2 0 V U V v v F IG. Ila

a FIG 24 -/25V -/25V '0 /25V FIG. 23

Aug. 2, 1960 Filed May 16, 1955 J. J. LENTZ ETAL ELECTRONIC CALCULATOR 22 Sheets-Sheet 7 0 (av) even 0 (0d) add 7'0 BALANCE TEST 87 (sign) RELAY m Zia m 410k 2- fill/( HM F 6' Z5 1/ u, d;

Aug. 2, 1960 J. J. LENTZ ET AL ELECTRONIC CALCULATOR 2.2 Sheets-Sheet 9 Filed May 16. 1955 FIG. I?

Aug. 2, 1960 J. J. LENTZ ETAL 2,947,478

ELECTRONIC CALCULATOR Filed May 16, 1955 22 Sheets-Sheet 10 AAA I I- 47M um .01 P

n M5 6 -I25V -3av Aug. 2, 1960 J. J. LENTZ ETAL ELECTRONIC CALCULATOR 22 Sheets-Sheet 11 Filed May 16, 1955 .Qh O -A s- 1960 J. J. LENTZ ETAL 2,947,478

ELECTRONIC CALCULATOR Filed May 16, 1955 22 Sheets-Sheet 12 DELAY REF. rrar u) f DELAY REF. 0/ 70k% rl-l M2 ww-o +2.50 V m 10x :I/J/IKI [2/7) x 7 [2/6 W06 AAA V/Wb (255.1 p

fan 970A wad J. J. LENTZ EI'AL 2,947,478

ELECTRONIC CALCULATOR 22 Sheets-Sheet 14 Aug. 2, 1960 Filed May 16. 1955 Aug. 2, 1960 Filed May 1.6, 1955 J. J. LENTZ El AL ELECTRONIC CALCULATOR 22 Sheets-Sheet 15 MAIN $705165 TRANS- DUCER BUFFER sromss Ne mmvsoucsn bro 5 FIG. 240

F/G. 38b

Aug. 2, 1960 J. J. LENTZ ETAL ELECTRONIC CALCULATOR Filed May 16, 1955 22 Sheets-Sheet 17 RECORD 647' E Aug. 2, 1960 J. J. LENTZ ETAL ELECTRONIC CALCULATOR 22 Sheets-Sheet 18 Filed May 16. 1955 AMPLIFIER I i I Aug. 2, 1960 J. J. LENTZ ETAL ELECTRONIC CALCULATOR 22 Sheets-Sheet 19 Filed May 16, 1955 1960 J. .1. LENTZ arm. 2,947,478

ELECTRONIC CALCULATOR Filed May 16. 1955 22 Sheets-Sheet 20 M 31* sh 0K0 relay wil SELECTED 3:]. be 5:). if K to rein}?! to FIG. 47 

